arch/arm/mach-imx/mach-imx27_visstrim_m10.c

   1 /*
   2  * mach-imx27_visstrim_m10.c
   3  *
   4  * Copyright 2010  Javier Martin <javier.martin@vista-silicon.com>
   5  *
   6  * Based on mach-pcm038.c, mach-pca100.c, mach-mx27ads.c and others.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  21  * MA 02110-1301, USA.
  22  */
  23
  24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  25
  26 #include <linux/platform_device.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/i2c.h>
  29 #include <linux/i2c/pca953x.h>
  30 #include <linux/input.h>
  31 #include <linux/gpio.h>
  32 #include <linux/delay.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/time.h>
  36 #include <mach/common.h>
  37 #include <mach/iomux-mx27.h>
  38
  39 #include "devices-imx27.h"
  40
  41 #define OTG_PHY_CS_GPIO (GPIO_PORTF + 17)
  42 #define SDHC1_IRQ IRQ_GPIOB(25)
  43
  44 static const int visstrim_m10_pins[] __initconst = {
  45         /* UART1 (console) */
  46         PE12_PF_UART1_TXD,
  47         PE13_PF_UART1_RXD,
  48         PE14_PF_UART1_CTS,
  49         PE15_PF_UART1_RTS,
  50         /* FEC */
  51         PD0_AIN_FEC_TXD0,
  52         PD1_AIN_FEC_TXD1,
  53         PD2_AIN_FEC_TXD2,
  54         PD3_AIN_FEC_TXD3,
  55         PD4_AOUT_FEC_RX_ER,
  56         PD5_AOUT_FEC_RXD1,
  57         PD6_AOUT_FEC_RXD2,
  58         PD7_AOUT_FEC_RXD3,
  59         PD8_AF_FEC_MDIO,
  60         PD9_AIN_FEC_MDC,
  61         PD10_AOUT_FEC_CRS,
  62         PD11_AOUT_FEC_TX_CLK,
  63         PD12_AOUT_FEC_RXD0,
  64         PD13_AOUT_FEC_RX_DV,
  65         PD14_AOUT_FEC_RX_CLK,
  66         PD15_AOUT_FEC_COL,
  67         PD16_AIN_FEC_TX_ER,
  68         PF23_AIN_FEC_TX_EN,
  69         /* SSI1 */
  70         PC20_PF_SSI1_FS,
  71         PC21_PF_SSI1_RXD,
  72         PC22_PF_SSI1_TXD,
  73         PC23_PF_SSI1_CLK,
  74         /* SDHC1 */
  75         PE18_PF_SD1_D0,
  76         PE19_PF_SD1_D1,
  77         PE20_PF_SD1_D2,
  78         PE21_PF_SD1_D3,
  79         PE22_PF_SD1_CMD,
  80         PE23_PF_SD1_CLK,
  81         /* Both I2Cs */
  82         PD17_PF_I2C_DATA,
  83         PD18_PF_I2C_CLK,
  84         PC5_PF_I2C2_SDA,
  85         PC6_PF_I2C2_SCL,
  86         /* USB OTG */
  87         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
  88         PC9_PF_USBOTG_DATA0,
  89         PC11_PF_USBOTG_DATA1,
  90         PC10_PF_USBOTG_DATA2,
  91         PC13_PF_USBOTG_DATA3,
  92         PC12_PF_USBOTG_DATA4,
  93         PC7_PF_USBOTG_DATA5,
  94         PC8_PF_USBOTG_DATA6,
  95         PE25_PF_USBOTG_DATA7,
  96         PE24_PF_USBOTG_CLK,
  97         PE2_PF_USBOTG_DIR,
  98         PE0_PF_USBOTG_NXT,
  99         PE1_PF_USBOTG_STP,
 100         PB23_PF_USB_PWR,
 101         PB24_PF_USB_OC,
 102 };
 103
 104 /* GPIOs used as events for applications */
 105 static struct gpio_keys_button visstrim_gpio_keys[] = {
 106         {
 107                 .type   = EV_KEY,
 108                 .code   = KEY_RESTART,
 109                 .gpio   = (GPIO_PORTC + 15),
 110                 .desc   = "Default config",
 111                 .active_low = 0,
 112                 .wakeup = 1,
 113         },
 114         {
 115                 .type   = EV_KEY,
 116                 .code   = KEY_RECORD,
 117                 .gpio   = (GPIO_PORTF + 14),
 118                 .desc   = "Record",
 119                 .active_low = 0,
 120                 .wakeup = 1,
 121         },
 122         {
 123                 .type   = EV_KEY,
 124                 .code   = KEY_STOP,
 125                 .gpio   = (GPIO_PORTF + 13),
 126                 .desc   = "Stop",
 127                 .active_low = 0,
 128                 .wakeup = 1,
 129         }
 130 };
 131
 132 static const struct gpio_keys_platform_data
 133                 visstrim_gpio_keys_platform_data __initconst = {
 134         .buttons        = visstrim_gpio_keys,
 135         .nbuttons       = ARRAY_SIZE(visstrim_gpio_keys),
 136 };
 137
 138 /* Visstrim_SM10 has a microSD slot connected to sdhc1 */
 139 static int visstrim_m10_sdhc1_init(struct device *dev,
 140                 irq_handler_t detect_irq, void *data)
 141 {
 142         int ret;
 143
 144         ret = request_irq(SDHC1_IRQ, detect_irq, IRQF_TRIGGER_FALLING,
 145                                 "mmc-detect", data);
 146         return ret;
 147 }
 148
 149 static void visstrim_m10_sdhc1_exit(struct device *dev, void *data)
 150 {
 151         free_irq(SDHC1_IRQ, data);
 152 }
 153
 154 static const struct imxmmc_platform_data visstrim_m10_sdhc_pdata __initconst = {
 155         .init = visstrim_m10_sdhc1_init,
 156         .exit = visstrim_m10_sdhc1_exit,
 157 };
 158
 159 /* Visstrim_SM10 NOR flash */
 160 static struct physmap_flash_data visstrim_m10_flash_data = {
 161         .width = 2,
 162 };
 163
 164 static struct resource visstrim_m10_flash_resource = {
 165         .start = 0xc0000000,
 166         .end = 0xc0000000 + SZ_64M - 1,
 167         .flags = IORESOURCE_MEM,
 168 };
 169
 170 static struct platform_device visstrim_m10_nor_mtd_device = {
 171         .name = "physmap-flash",
 172         .id = 0,
 173         .dev = {
 174                 .platform_data = &visstrim_m10_flash_data,
 175         },
 176         .num_resources = 1,
 177         .resource = &visstrim_m10_flash_resource,
 178 };
 179
 180 static struct platform_device *platform_devices[] __initdata = {
 181         &visstrim_m10_nor_mtd_device,
 182 };
 183
 184 /* Visstrim_M10 uses UART0 as console */
 185 static const struct imxuart_platform_data uart_pdata __initconst = {
 186         .flags = IMXUART_HAVE_RTSCTS,
 187 };
 188
 189 /* I2C */
 190 static const struct imxi2c_platform_data visstrim_m10_i2c_data __initconst = {
 191         .bitrate = 100000,
 192 };
 193
 194 static struct pca953x_platform_data visstrim_m10_pca9555_pdata = {
 195         .gpio_base = 240, /* After MX27 internal GPIOs */
 196         .invert = 0,
 197 };
 198
 199 static struct i2c_board_info visstrim_m10_i2c_devices[] = {
 200         {
 201                 I2C_BOARD_INFO("pca9555", 0x20),
 202                 .platform_data = &visstrim_m10_pca9555_pdata,
 203         },
 204         {
 205                 I2C_BOARD_INFO("tlv320aic32x4", 0x18),
 206         }
 207 };
 208
 209 /* USB OTG */
 210 static int otg_phy_init(struct platform_device *pdev)
 211 {
 212         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 213
 214         mdelay(10);
 215
 216         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 217 }
 218
 219 static const struct mxc_usbh_platform_data
 220 visstrim_m10_usbotg_pdata __initconst = {
 221         .init = otg_phy_init,
 222         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 223 };
 224
 225 /* SSI */
 226 static const struct imx_ssi_platform_data visstrim_m10_ssi_pdata __initconst = {
 227         .flags                  = IMX_SSI_DMA | IMX_SSI_SYN,
 228 };
 229
 230 static void __init visstrim_m10_board_init(void)
 231 {
 232         int ret;
 233
 234         imx27_soc_init();
 235
 236         ret = mxc_gpio_setup_multiple_pins(visstrim_m10_pins,
 237                         ARRAY_SIZE(visstrim_m10_pins), "VISSTRIM_M10");
 238         if (ret)
 239                 pr_err("Failed to setup pins (%d)\n", ret);
 240
 241         imx27_add_imx_ssi(0, &visstrim_m10_ssi_pdata);
 242         imx27_add_imx_uart0(&uart_pdata);
 243
 244         i2c_register_board_info(0, visstrim_m10_i2c_devices,
 245                                 ARRAY_SIZE(visstrim_m10_i2c_devices));
 246         imx27_add_imx_i2c(0, &visstrim_m10_i2c_data);
 247         imx27_add_imx_i2c(1, &visstrim_m10_i2c_data);
 248         imx27_add_mxc_mmc(0, &visstrim_m10_sdhc_pdata);
 249         imx27_add_mxc_ehci_otg(&visstrim_m10_usbotg_pdata);
 250         imx27_add_fec(NULL);
 251         imx_add_gpio_keys(&visstrim_gpio_keys_platform_data);
 252         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 253 }
 254
 255 static void __init visstrim_m10_timer_init(void)
 256 {
 257         mx27_clocks_init((unsigned long)25000000);
 258 }
 259
 260 static struct sys_timer visstrim_m10_timer = {
 261         .init   = visstrim_m10_timer_init,
 262 };
 263
 264 MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
 265         .boot_params = MX27_PHYS_OFFSET + 0x100,
 266         .map_io = mx27_map_io,
 267         .init_early = imx27_init_early,
 268         .init_irq = mx27_init_irq,
 269         .timer = &visstrim_m10_timer,
 270         .init_machine = visstrim_m10_board_init,
 271 MACHINE_END